If you are looking for a big late war scenario with plenty of strategic options for both sides, then you really need to check out von Earl's
2nd Chronicles of V Pz Army
and
3rd Chronicles of V Panzer Army.
Both are from the Ardennes Offensive. If the files are not here on the Blitz website, I can send them to you. These are really good scenarios for head to head play.
Also, for a great account of the action with great maps, go to the US Center Of Military History online books. You can see this one here:
http://www.history.army.mil/books/wwii/7-8/7-8_cont.htm